Vibrational Revivals and the Control of Photochemical Reactions
Vibrational Revivals and the Control of Photochemical Reactions
复制标题
振动复兴和光化学反应的控制
DOI：
10.1021/jp971247u
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发表时间：
1997
影响因子：
2.9
通讯作者：
V. Engel
中科院分区：
文献类型：
--
作者：
S. Meyer;V. Engel
具有多个振动自由度的分子中的短时间振动波包运动表现出随特征振动周期的振荡行为。在很长一段时间内，会发生恢复，即波包恢复其初始形式。对于小振动耦合，单模态的恢复时间近似于不耦合核运动的恢复时间。单自由度的恢复发生在不同的时间，可以利用短脉冲电子激励在不同的时间控制反应通道之间的分支比。HOD分子的一个模型被用来演示这个一般场景。
The short-time vibrational wave packet motion in a molecule with several vibrational degrees of freedom shows oscillatory behavior with the characteristic vibrational periods. For long times revivals will occur, i.e., the wave packet restores its initial form. For small vibrational coupling the revival times in the single modes are approximately those of the uncoupled nuclear motion. The fact that the revivals with respect to the single degrees of freedom occur at different times can be used to control the branching ratio between reaction channels by short-pulse electronic excitation at different times. A model of the HOD molecule is used to demonstrate this general scenario.